<!DOCTYPE HTML>
<html>
<head>
  <meta charset="utf-8">
  <title>Toplevel data navigation</title>
</head>
<body>
test3: performing data: URI navigation through win.loc.href<br/>
<script>
  window.location.href = "data:text/html,<body>toplevel data: URI navigations should be blocked</body>";
</script>
</body>
</html>
